An interface implemented by a tooltip text provider service. This service is called to discover what tooltip text is associated with the node that the pointer is positioned over.
Embedders may implement and register their own tooltip text provider service if they wish to provide different tooltip text.
The default service returns the text stored in the TITLE attribute of the node or a containing parent.
PRBool getNodeText ( nsIDOMNode node , out PRUnichar* text )
Called to obtain the tooltip text for a node.
PR_TRUEif tooltip text is associated with the node and was returned in the aText argument;
Reference documentation is generated from Mozilla's source.